use std::path::{Component, Path, PathBuf};
use nu_glob::MatchOptions;
use nu_path::{canonicalize_with, expand_path_with};
use nu_protocol::{ShellError, Span, Spanned};
#[allow(clippy::type_complexity)]
pub fn glob_from(
pattern: &Spanned<String>,
cwd: &Path,
span: Span,
options: Option<MatchOptions>,
) -> Result<
(
Option<PathBuf>,
Box<dyn Iterator<Item = Result<PathBuf, ShellError>> + Send>,
),
ShellError,
> {
let path = PathBuf::from(&pattern.item);
let path = expand_path_with(path, cwd);
let (prefix, pattern) = if path.to_string_lossy().contains('*') {
let mut p = PathBuf::new();
for c in path.components() {
if let Component::Normal(os) = c {
if os.to_string_lossy().contains('*') {
break;
}
}
p.push(c);
}
(Some(p), path)
} else {
let path = if let Ok(p) = canonicalize_with(path, cwd) {
p
} else {
return Err(ShellError::DirectoryNotFound(pattern.span, None));
};
(path.parent().map(|parent| parent.to_path_buf()), path)
};
let pattern = pattern.to_string_lossy().to_string();
let glob_options = options.unwrap_or_else(MatchOptions::new);
let glob = nu_glob::glob_with(&pattern, glob_options).map_err(|err| {
nu_protocol::ShellError::GenericError(
"Error extracting glob pattern".into(),
err.to_string(),
Some(span),
None,
Vec::new(),
)
})?;
Ok((
prefix,
Box::new(glob.map(move |x| match x {
Ok(v) => Ok(v),
Err(err) => Err(nu_protocol::ShellError::GenericError(
"Error extracting glob pattern".into(),
err.to_string(),
Some(span),
None,
Vec::new(),
)),
})),
))
}